/*
 * File    : WUJarReader.java
 * Created : 31-Mar-2004
 * By      : parg
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.core3.util.jar;

/**
 * @author parg
 *
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.JarEntry;
import java.util.jar.JarInputStream;

public class AEJarReader {
    protected Map entries = new HashMap();

    public AEJarReader(String name) {
        InputStream is = null;
        JarInputStream jis = null;

        try {
            is = getClass().getClassLoader().getResourceAsStream(name);

            jis = new JarInputStream(is);

            while (true) {

                JarEntry ent = jis.getNextJarEntry();

                if (ent == null) {

                    break;
                }

                if (ent.isDirectory()) {

                    continue;
                }

                ByteArrayOutputStream baos = new ByteArrayOutputStream();

                byte[] buffer = new byte[8192];

                while (true) {

                    int l = jis.read(buffer);

                    if (l <= 0) {

                        break;
                    }

                    baos.write(buffer, 0, l);
                }

                entries.put(ent.getName(), new ByteArrayInputStream(baos.toByteArray()));
            }

        } catch (Throwable e) {

            e.printStackTrace();

        } finally {

            try {
                if (jis != null) {

                    jis.close();
                }

                if (is != null) {

                    is.close();
                }
            } catch (Throwable e) {

            }
        }
    }

    public InputStream getResource(String name) {
        return ((InputStream) entries.get(name));
    }
}
